# How to Use the EDR Bypass Skill Module for Evasion Techniques

> Master EDR bypass techniques with the zhaoxuya520/reverse-skill module. Learn advanced evasion using SysWhispers3, Hell's Gate, and PE-Sieve for seamless system access.

- Repository: [ZhaoXu/reverse-skill](https://github.com/zhaoxuya520/reverse-skill)
- Tags: how-to-guide
- Published: 2026-08-08

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**The EDR bypass skill module in the zhaoxuya520/reverse-skill repository centralizes advanced evasion techniques such as SysWhispers3, Hell's Gate, and PE-Sieve, enabling operators to bypass Endpoint Detection and Response systems through a routing-based PowerShell interface.**

The **EDR bypass skill module** serves as the primary evasion component within the `zhaoxuya520/reverse-skill` repository, providing a structured framework for circumventing modern security controls. Located under `skills/edr-bypass-re/`, this module integrates with the framework's routing configuration to deliver platform-agnostic bypass capabilities. Understanding its architecture and execution workflow enables red team operators to deploy effective evasion techniques against monitored environments.

## Architecture of the EDR Bypass Skill Module

The module follows the reverse-skill framework's convention of separating skill definitions from implementation logic. At its core, the [[`skills/edr-bypass-re/SKILL.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/SKILL.md)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/SKILL.md) file defines the module's inputs, outputs, and supported bypass techniques. The routing configuration in [[`skills/routing_zh.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/routing_zh.md)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/routing_zh.md) maps high-level labels like "EDR bypass" to this skill implementation at line 94, creating the bridge between user intent and execution.

### Routing Configuration

The routing system relies on [[`skills/config/routing.json`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/config/routing.json)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/config/routing.json) as the authoritative source for skill dispatch. When a user requests an EDR bypass operation, the master routing script queries this configuration to locate the appropriate handler within `skills/edr-bypass-re/`.

### Reference Documentation

Technical implementation details for various hooking mechanisms reside in [[`skills/edr-bypass-re/references/hook-survey.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/references/hook-survey.md)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/references/hook-survey.md), which catalogs known EDR hooking vectors including **ntdll hooks**, **API Monitors**, and **inline hooks**.

## Supported Evasion Techniques

The module implements several advanced evasion methodologies through discrete PowerShell scripts, each targeting specific EDR detection mechanisms.

### SysWhispers3 Direct System Calls

The [`syswhispers3.ps1`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/syswhispers3.ps1) implementation generates shellcode that invokes Windows Native API functions via direct system calls, bypassing user-mode hooks typically monitored by EDR solutions. This technique avoids the standard import address table (IAT) to minimize detection footprints.

### Hell's Gate Stealth Transitions

Implemented in [`hellgate.ps1`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/hellgate.ps1), the **Hell's Gate** technique facilitates stealthy transitions to kernel mode execution by dynamically resolving system call numbers from `ntdll.dll` memory. This enables syscall invocation without static imports, evading signature-based detection.

### PE-Sieve Memory Analysis

The [`pe-sieve.ps1`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/edr-bypass-re/pe-sieve.ps1) script utilizes the PE-Sieve tool to scan process memory for hooked functions and extract unhooked code regions. Operators use this to identify clean memory segments for payload injection while avoiding monitored APIs.

## Executing the EDR Bypass Skill

Invocation occurs through the master routing script [`skills/scripts/master-route.ps1`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/scripts/master-route.ps1), which handles parameter validation and skill dispatch based on the routing configuration.

### Basic Invocation

Execute the skill using the "EDR bypass" routing hint:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass `
    -File skills/scripts/master-route.ps1 `
    -Hint "EDR bypass"

```

### Technique-Specific Execution

Specify individual techniques using the `-Param` hashtable:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass `
    -File skills/scripts/master-route.ps1 `
    -Hint "EDR bypass" `
    -Param @{ technique = "SysWhispers3" }

```

### Chaining Multiple Techniques

Combine complementary evasion methods for layered defense bypass:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass `
    -File skills/scripts/master-route.ps1 `
    -Hint "EDR bypass" `
    -Param @{ technique = "pe-sieve,hook-injection" }

```

### Integration with Automation Pipelines

For red team automation, wrap the invocation in a reusable function:

```powershell
function Invoke-EDRBypass {
    param([string]$Technique = "SysWhispers3")
    return & skills/scripts/master-route.ps1 `
        -Hint "EDR bypass" `
        -Param @{ technique = $Technique }
}

```

## Summary

- The **EDR bypass skill module** resides in `skills/edr-bypass-re/` and provides structured evasion capabilities against modern Endpoint Detection and Response systems.
- **Routing configuration** in [`skills/routing_zh.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/routing_zh.md) and [`skills/config/routing.json`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/config/routing.json) maps execution requests to the appropriate skill implementation.
- **Supported techniques** include SysWhispers3 for direct system calls, Hell's Gate for stealthy kernel transitions, and PE-Sieve for memory analysis.
- **Execution** occurs via `skills/scripts/master-route.ps1` with support for single techniques or chained combinations through PowerShell hashtable parameters.

## Frequently Asked Questions

### What is the EDR bypass skill module?

The **EDR bypass skill module** is a specialized component within the `zhaoxuya520/reverse-skill` repository that aggregates multiple evasion techniques into a single, routable interface. It enables operators to bypass Endpoint Detection and Response solutions through documented methods like direct system calls and memory unhooking.

### How does the routing system connect to the skill?

The routing system references the skill through line 94 in [[`skills/routing_zh.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/routing_zh.md)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/routing_zh.md), which links the "EDR bypass / evasion" label to [`edr-bypass-re/SKILL.md`](https://github.com/zhaoxuya520/reverse-skill/blob/main/edr-bypass-re/SKILL.md). The master routing script consults [[`skills/config/routing.json`](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/config/routing.json)](https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/config/routing.json) to resolve these mappings at runtime.

### Which evasion techniques are supported by the module?

The module supports **SysWhispers3** for generating direct syscall shellcode, **Hell's Gate** for dynamic system call resolution, **PE-Sieve** for identifying unhooked memory regions, and various hook injection methods documented in the references folder.

### How do I invoke the skill from PowerShell?

Use the master routing script with the `-Hint` parameter set to "EDR bypass" and optionally specify techniques via the `-Param` hashtable. For example: `powershell -File skills/scripts/master-route.ps1 -Hint "EDR bypass" -Param @{ technique = "SysWhispers3" }`.